This onn. mouse isn't advertised to use any additional software, the USB dongle is stored under the device if you can't find it. Below is the onn mouse software that may be of use for the extra buttons.
Basic Specs:
- 5-button
- 5 adjustable sensitivity levels: 600 / 1000 / 1600 / 2400 / 3600
- Anti-slip rubber grips
- Uses 1 AA battery
- 4.5 in L x 3 in W x 1.65 in H (11.4 cm x 7.6 cm x 4.2 cm)